Go Language Tutorial
In Go programming, pointers feature is available and explains here how to use pointers.
A pointer is a programming language object whose value refers to another value stored else-where in the memory using it’s address.
Address of memory for any value can be accessed using & symbol.
package main import "fmt" func main() { var a int a = 20 // prints value of a fmt.Printf("Value of a: %d\n", a) // prints address of x fmt.Println("Address of a: ",&a) }Output:
$ go build pointers.go $ ./pointers Value of a: 20 Address of a: 0xc42000a310
Below code is used to define integer pointer variable:
var a *int
Setting value to the pointer variable
*a = 10
Setting memory address to the pointer variable
a = memory_address
package main import "fmt" func main() { var a int a = 20 //define pointer variables ptr and val var ptr *int val := new(int) ptr = new(int) // setting value to the pointer variable *ptr = a fmt.Printf("Address of pointer variable 'ptr': %d\n", ptr) fmt.Printf("Value of pointer variable 'ptr': %d\n", *ptr) //seting address val = &a // setting address of val variable to pointer variable fmt.Printf("Address of pointer variable 'val': %d\n", val) fmt.Printf("Value of pointer variable 'val': %d\n", *val) }Output:
$ go build pointers.go $ ./pointers Address of pointer variable 'ptr': 842350961080 Value of pointer variable 'ptr': 20 Address of pointer variable 'val': 842350961032 Value of pointer variable 'val': 20« Previous Next »